Thoughts...

The course is designed around the USGI sling. The "loop" method is a game changer and instantly improved my shooting over the "hasty" and "hasty-hasty" methods.

However...it's nice to learn to shoot the sling you plan to keep on the rifle.

So...

Magpul makes the RLS (Rifleman Loop Sling) and it combines the best of both. You can easily use it as a traditional two-point sling, but also use it in a loop-like configuration without making any changes.

When I discovered the RLS, I immediately swapped out my USGI slings for the RLS on all my rifles.

Under $20 at Amazon.